Everyone has a natural desire to sing. It is a way of expressing feelings and emotions as well as telling stories and reminding us of important events and times in our lives. For some the desire to sing is an instinctive personal thing and there is no wish to share the sound with others or perform. The classic example of this is singing in the shower.
For others the feelings associated with singing are more significant and represent a desire to be involved in music, whether it is singing with friends, or in a choir or with a band or orchestra. Many people say they can't sing, but this is rarely true.
It usually means the person is not confident about the sound of their singing voice. However, with a bit of knowledge of fundamentals like learning to sing pitches and rhythms by ear and a bit of practice, it is the author’s belief that everyone can sing at least enough to gain a great deal of pleasure from it.